nrPUCCH2

Generate PUCCH format 2 modulation symbols

Syntax

sym = nrPUCCH2(uciCW,nid,rnti)

sym = nrPUCCH2(___,'OutputDataType',datatype)

Description

sym = nrPUCCH2(uciCW,nid,rnti) returns the physical uplink control channel (PUCCH) format 2 modulation symbols, as defined in TS 38.211 Section 6.3.2.5 [1]. uciCW is the encoded uplink control information (UCI) codeword, as defined in TS 38.212 Section 6.3.1 [2]. The encoding consists of scrambling using scrambling identity nid and QPSK modulation. rnti specifies the radio network temporary identifier (RNTI) of the user equipment (UE).

sym = nrPUCCH2(___,'OutputDataType',datatype) specifies the PUCCH symbol data type in addition to the input arguments in the previous syntax.

Examples

Generate PUCCH Format 2 Modulation Symbols

Create a random sequence of binary values corresponding to a UCI codeword of 100 bits.

uciCW = randi([0 1],100,1);

Generate PUCCH format 2 modulation symbols for the specified scrambling identity and RNTI.

nid = 148;
rnti = 160;
sym = nrPUCCH2(uciCW,nid,rnti)

sym = 50×1 complex

  -0.7071 + 0.7071i
   0.7071 - 0.7071i
  -0.7071 - 0.7071i
  -0.7071 - 0.7071i
  -0.7071 - 0.7071i
  -0.7071 + 0.7071i
   0.7071 - 0.7071i
  -0.7071 - 0.7071i
  -0.7071 + 0.7071i
  -0.7071 + 0.7071i
  -0.7071 + 0.7071i
   0.7071 + 0.7071i
   0.7071 + 0.7071i
  -0.7071 - 0.7071i
  -0.7071 - 0.7071i
      ⋮

Generate PUCCH Format 2 Modulation Symbols of Nondefault Data Type

Create a random sequence of binary values corresponding to a UCI codeword of 100 bits.

uciCW = randi([0 1],100,1);

Generate PUCCH format 2 modulation symbols of single data type for the specified scrambling identity and RNTI.

nid = 512;
rnti = 2563;
sym = nrPUCCH2(uciCW,nid,rnti,'OutputDataType','single')

sym = 50×1 single column vector

   0.7071 - 0.7071i
   0.7071 - 0.7071i
  -0.7071 - 0.7071i
  -0.7071 + 0.7071i
   0.7071 - 0.7071i
  -0.7071 + 0.7071i
   0.7071 + 0.7071i
   0.7071 + 0.7071i
   0.7071 - 0.7071i
   0.7071 + 0.7071i
   0.7071 - 0.7071i
   0.7071 - 0.7071i
  -0.7071 + 0.7071i
  -0.7071 + 0.7071i
   0.7071 + 0.7071i
      ⋮

Input Arguments

uciCW — Encoded UCI codeword

logical column vector

Encoded UCI codeword, specified as a logical column vector. For more information, see TS 38.212 Section 6.3.1 [2].

Data Types: int8 | double | logical

nid — Scrambling identity

integer from 0 to 1023

Scrambling identity, specified as an integer from 0 to 1023. nid is higher layer parameter dataScramblingIdentityPUSCH, ranging from 0 to 1023, if the higher layer parameter is configured. Otherwise, nid is the physical layer cell identity number NCellID, ranging from 0 to 1007.

For more information, see TS 38.211 Section 6.3.2.5.1.

Data Types: double

rnti — RNTI of UE

integer from 0 to 65,535

RNTI of the UE, specified as an integer from 0 to 65,535.

Data Types: double

datatype — Data type of output symbols

'double' (default) | 'single'

Data type of the output symbols, specified as 'double' or 'single'.

Data Types: char | string

Output Arguments

sym — PUCCH format 2 modulation symbols

complex column vector

PUCCH format 2 modulation symbols, returned as a complex column vector.

Data Types: single | double
Complex Number Support: Yes

References

[1] 3GPP TS 38.211. “NR; Physical channels and modulation.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

[2] 3GPP TS 38.212. “NR; Multiplexing and channel coding.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using MATLAB® Coder™.

Usage notes and limitations:

The datatype input argument must be compile-time constant. For example, when specifying 'single' as the output data type, include {coder.Constant('OutputDataType'),coder.Constant('single')} in the -args value of the codegen function. For more information, see the coder.Constant (MATLAB Coder) class.

Version History

Introduced in R2019a